While these militant anti-DG knuckleheads need to get a life, we should acknowledge that we are bringing some of this on ourselves by allowing courses to be installed where they present a real hazard to other users of the park.
There was a recent review of Resoft Park in Alvin, TX that spoke to that, and the pictures confirm that this course never should have been installed when walking paths and playground equipment are in the line of play. Same with a new course around here that I reviewed - Tipp City in Dayton. There are many other examples - heck, even Idlewild has a few spots where you have to be really careful.
Of course I would expect walkers who are wandering in our fairways away from playgrounds and picnic tables to watch out and they should accept a fair amount of responsibility if they are hit, but when they are using defined walking paths, or for God's sake, watching their kids play baseball on a defined field then the problem is primarily ours.
Sure, we all want to see as many DG courses in the ground as possible to give us more playing options, but if we keep stuffing them in "multi-use" parks like this then we are going to have to deal with the Green wackos citing these sort of accidents to justify their "save the flora and fauna" cries. In fact, in the more extreme examples like Resoft, we should be the first to declare it unplayable and explain to the appropriate officials that someone could get hurt. IMO that would only help our larger cause...